Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751146AbWCFQZa (ORCPT ); Mon, 6 Mar 2006 11:25:30 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751047AbWCFQZa (ORCPT ); Mon, 6 Mar 2006 11:25:30 -0500 Received: from omx1-ext.sgi.com ([192.48.179.11]:51139 "EHLO omx1.americas.sgi.com") by vger.kernel.org with ESMTP id S1750771AbWCFQZ3 (ORCPT ); Mon, 6 Mar 2006 11:25:29 -0500 Date: Mon, 6 Mar 2006 08:24:55 -0800 (PST) From: Christoph Lameter To: Pekka Enberg cc: akpm@osdl.org, linux-kernel@vger.kernel.org, kiran@scalex86.org, alokk@calsoftinc.com Subject: Re: cache_reap(): Further reduction in interrupt holdoff In-Reply-To: <84144f020603052349p4e95381ar92c3f80027557c12@mail.gmail.com> Message-ID: References: <84144f020603052349p4e95381ar92c3f80027557c12@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 536 Lines: 14 On Mon, 6 Mar 2006, Pekka Enberg wrote: > Touched processing worries me little because it's used when there's > high allocation pressure. Do you have any numbers where this patch > helps? We had frequent holdoffs >30usec in cache_reap() without this patch. Now it happens once in awhile. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/